var $t = jQuery.noConflict();

$t(document).ready(function() {
	$t("#nav_tab_conteudo > div").hide();
	$t("#nav_tab_conteudo > div:eq(0)").show();
	$t("#box_nav_pre_lanc ul > li:eq(0)").css("background", "url(layout/interface/imagens/bot_nav.jpg) 0 -30px no-repeat");
});
 
function opentab(num) {
	$t("#nav_tab_conteudo > div").hide();
	$t("#nav_tab_conteudo > div:eq(" + (num-1) + ")").fadeIn();
	$t("#box_nav_pre_lanc ul > li").css("background", "url(layout/interface/imagens/bot_nav.jpg) no-repeat");
	$t("#box_nav_pre_lanc ul > li:eq(" + (num-1) + ")").css("background", "url(layout/interface/imagens/bot_nav.jpg) 0 -30px no-repeat");	
}